Securing element



oct. 27, 1931. A, H JONES 1,829,657

' SECURING ELEMENT Filed Dec. '7. 1929 r INVENTOR i NESSES //m/"Z Jamas L BY 9% 1 K wir a. Zd ATTORNEY Patented oct. 27, 1931 A UNITED STATES A, 7 regata PATENT orifice ALLAN HETRICK ."roNEsoi 'ramrroNQrmwan-nsnm AssrGNoR'To ROLLER BEARING ooMPANY or VMannion,Y or rnEN'roN, NEW JERSEY, @CORPORATION or NEW JERSEY sEcURrNG ELEMENT Application filed December 7, 1929. Serial No. 412,501.

vThis invention relatesto a securing 'ele-v ment to be used as a unit, sleeve .or dowel,

, for securing together adjacent or contiguous pieces or parts of divers devices and ma- '5 chines and construction work.

The principal object of the invention is the provision of a se'curing elementvof the indicated character so l constructed and formed as to be capable of kradial expansion m to tightly t on a shaft or lilrepart, tohold y ,Y said shaft or the like againstV displacement, or to-hold appurtenances on a yshaft or the like against displacement, and which is also f Vrcapable of radial contraction vto tightly t 15; into alined holes V,inparts to secure them together. n

' Other objects are y: to Vobvia'te screw threads vandto save costs involved in cutting them in the usual nuts, shafts, bolts and the like;

i 20 :and to eXpedite the worlrof assembling parts.

= The nature of the invention and its distinguishing features fand advantages will appear-'when the following specification isread in connection with the accompanying draw- 25 ings, in which Figure 1 is a view of a securing elementv n partly in elevation and partly in section conf structed in accordance with the invention;

Y kFigure 2 is a view illustrating one use of '30' two securingelements, each constructed in .accordance with the invention; f A

Figure 3 is a view illustrating another use of a single securing element constructed in accordance with the invention.

Referring now more particularly to Figure 1 ofthe drawings, it will be apparent kthat there is yshown an element 10 consisting of ay tubular body, round in cross-section and of uniform diameter throughout. 'Ihey body x40 is produced from a single piece of flat spring metal which is helically wound to provide normally spaced convolutions according to known Vmethods of manufacture .A securing element so constructed-.and formedrwill l 4"'be "capable of kradial .expansion to increase the diameter thereof, and also capable of radial contraction to decrease the diameter thereof.v

Within the invention, securing elements having the characteristics mentioned, will `50 be made in any proportionate size, to obtain the desired strength and rigidity to suit particular requirements. It will therefore be understood that securing elements ofy different lengths and diameters arecontemplated. vli5 In Figure 2 there are shown two elements Y each constructed as set forth above. Thev elements 10 are applicable to 'a shaft 11 'hav-` ing a small pulley 12 loosely mounted. Each element 10 hasan inside diameter slightly 60 lessthan'the diameter of the shaft 11. Itwill therefore be obvious that each element 10 may be driven on the shaft 11, one on each side of the pulley 12. In driving each `ele' ment 10 on the shaft 'a hammer or other suit- Q5 able tool or tools may be used. vEach element 10 will be caused to expand radially from its normal condition, and due to the resiliency of the metal, the element will have the power of radial contraction to tightly J0 grip the shaft. In this manner the pulley will be held in place on the shaft. Attention is now called to the fact that each of the elements 10 serves as a nut and that the expense of providing screw threads both to they shaft and securing elements is saved.

In Figure 3 use is made of a securing element 10 having the mentioned features, and is of suitable length and diameter to constitute a dowel. In practice the outside di-'n ameter thereof will be slightly larger thanW the diameters of the alined holes or bores 13 Y in the work pieces 14. In driving the element 10 into the alined holes or bores the element 10 will be forcefully contractedrsi-lg5 diallyv from its normal condition, and due'" to the resiliency of the metal., the element will have the power of radialexpansion to tightly grip the' walls of the holes or bores 90 

